Results 301 to 310 of about 703,544 (344)

Glass Transition Temperature and Other Transitions

1993
The glass transition temperature (Tg) is defined as the temperature at which a material loses its glasslike, more rigid properties and becomes rubbery and more flexible in nature. Practical definitions of Tg differ considerably among different measurement methods; therefore, specification of Tg requires indication of the method used.
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Viscosity of fluoride glasses at glass transition temperature

Journal of Non-Crystalline Solids, 1990
Abstract The viscosities of some fluoride glasses were measured by the penetration method in the glass transition temperature range, and the glass transition temperature was determined from DSC as a function of the heating rate. It was concluded that the viscosity at the glass transition temperature increases as the heating rate decreases ...
Manabu Koide, Kazumasa Matusita, Takayuki Komatsu   +2 more
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The glass transition temperature versus the fictive temperature

Journal of Non-Crystalline Solids, 2007
AbstractA comparison of the values of the glass transition temperature (T g ) measured on cooling and the limiting fictive temperature ðT 0f Þmeasured on heating as a function of cooling rate is performed for a polystyrene sample using both capillary dilatometry and differentialscanning calorimetry (DSC).
Prashanth Badrinarayanan, Wei Zheng, Qingxiu Li, Sindee L. Simon   +3 more
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Glass Transition Temperature Depression

2016
Glass transition temperature depression is the phenomenon which describes the reduction of the glass transition temperature by external factors, usually by the presence of solvent molecules or of other additives in the polymer matrix. Such additives have the capacity to enhance the mobility of the polymer chains, thus enabling long range motions at ...
Jansen, Johannes Carolus
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The glass transition temperature of polystyrene

Journal of Thermal Analysis, 1996
A round robin test was performed to determine the reliability of values for the glass transition temperatureTg as determined by DTA on polymers. Ten different instruments were involved. The test material was high molecular weight polystyrene. Values forTg (midpoint) were reported in the range 107°C±2 K.
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Glass Transition Temperature (Tg )

2016
At the macroscopic scale, the glass transition temperature, Tg, represents the temperature above which a material changes from a stiff glass into a viscous fluid or a rubbery material. Besides polymers, which are the most common materials with a glass transition temperature, also various amorphous solids, organic liquids, alloys, or inorganic glasses ...
Jansen, Johannes Carolus
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Glass Transition Temperatures of Dental Porcelain

Journal of Dental Research, 1981
C W, Fairhurst, D T, Hashinger, S W, Twiggs   +2 more
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Glass transition temperature of citric acid

Journal of Pharmaceutical Sciences, 1980
M P, Summers, R P, Enever
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Glass Transition Temperature of Anionic Polyisoprene

Rubber Chemistry and Technology, 1981
J. M. Widmaier, G. C. Meyer
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glass transition temperature

2021
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